Wall charger



FIG. 1 is a front elevational view thereof;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right elevational view thereof;

FIG. 4 is a left elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Throughout the figures, broken lines directly adjacent to shaded areas define the boundaries of the claimed design and form no part thereof. All other broken lines illustrate portions of the wall charger that form no part of the claimed design. 

CLAIM The ornamental design for a wall charger, as shown and described. 